Forty years and ten iterations later, the Oregon Trail has sold over 65 million copies worldwide, becoming the most widely distributed educational game of all time. Market research done in 2006 found that almost 45 percent of parents with young children knew Oregon Trail, despite the fact that it largely disappeared from the market in the late ’90s.

A recent frenzy of nostalgia over the game has yielded everything from popular T-shirts (“You have died of dysentery”) to band tour promotions (“Fall Out Boy Trail”) to humorous references on popular websites (“Digg has broken an axle”).

“It’s hard to think of another game that endured for so long and yet has still been so successful,” says Jon-Paul Dyson, director of the International Center for the History of Electronic Games at the Strong. “For generations of computer users, it was their introduction to gaming, and to computer use itself.”